Right after the Islamic Republic threatened civilian flights across the region, an Omani co-pilot was accused of trying to crash a plane full of Israelis. On the regime’s state television, a commentator proposed making regional air routes unsafe and claimed Iran could disrupt up to 2,500 flights a day. He described turning neighbouring airspace into a wall across routes connecting east and west. Now a Flydubai flight carrying Israeli passengers has plunged after a violent cockpit incident and made an emergency landing in Saudi Arabia. The co-pilot’s alleged attempt to crash it is under investigation. Oman has long been one of the Islamic Republic’s closest diplomatic partners. The Islamic Republic also has a history of killing civilians in the air. In January 2020, its Revolutionary Guard shot down Ukraine International Airlines Flight PS752, killing all 176 people aboard. After a threat to civilian aviation aired by the regime, today’s incident demands scrutiny to determine whether the world’s biggest state sponsor of terror had any role.